Power-wrench.



PATBNTBD JUNE 2,1903.

f i* i Y $.15'. SHORT. rPOWER. WRENCH. APPLICATION FILED 00T. a. 1m.

N0 MODEL.

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i Patented June 2, 1903.

Fries.

Artnr SAMUELl F. SHORT, OF NEW YORK, N. Y., ASSIGNOR TO WESTERN ELECTRICCOMPANY, OFv CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

VPOWER-w RENO H.

SPECIFICATION formngpart of Letters Patent N0. 729,686, dated June 2,1903.

Application filed October 6, 1902.

To @ZZ whom t muy concern:

Be it known that I, SAMUEL F. SHORT, a citi- 4zen of the United States,residing at New York,

in the county of New York and State of New York, have invented a certainnew and useful Improvement in Power-.Wrenches, of which the following isa full, clear, concise,

.and exact description.

. moved one by one intothe rotating wrenchsocket, whereby they arerapidly and auto` matically screwed upon said shank. The advantage ofthe Wrench being held f rictionally instead of rigidly by the chuck isthat the operator is not required to pull the nut out of the socket atany certain instant, but may wait until it has beenscrewed on as far asit will go, whereupon the wrench will remain stationary while the chuckcontinues to rotate, slipping relatively thereto.

I will describe my invention byreferenceV .to the accompanying drawings,wherein- Figure l is a vertical sectional view of a machine constructedin accordance therewith. Fig. 2 is a front view thereof. Fig. 3 is arear view. Fig. 4t is a detailviewin cross-section, taken on line 4 4.of Fig. l; and Fig. 5 is a detail sectional View on line 5 5 of Fig 1.

The same parts are designated by the same letters of reference whereverthey are shown.

The head or chuck a, which carries the socketed spindle or wrench b, isarranged to" be driven by any suitable means. For instance, it may beinserted in the head of a lathe, as shown in dotted lines in Fig. l. Thewrench?) consists of a spindle passing through the chuck a, said spindlehaving an enlarged head b', which rests in a conical seat inthe forwardend of the chuck and having its rear end passing through the end of thechuck and Serial No. 126,053. (No model.)

fitted with an adjusting-nut and a lock-nut,

a com pression-spring being confined between the adjusting-nut and theend of the chuckspindle. The Wrench-spindle is thus held frictionally bythe chuck, so that it can slip relatively thereto. The enlarged head ofthe i spindle b is provided with a nut-shaped recess b2,as shown, toconstitute a Wrench.

A chute or guidewayc is provided in asso; 6e ciatiou with thefriction-wrench, having a hopper c at the top to receive the nuts and ayieldingl stop d near the bottom just above the wrench to hold thecolumn of nuts contained in the chute.

An agitator is preferably provided in con` nection with the hopper, sothat the nuts maybe shaken about in said hopper until they fall edgewiseinto the chute, in which they rest in a vertical columnedge to edge. 7oI have shown a vertically-reciprocating slide e, provided with aspring-actuated pawl f at its upper end entering the lower portion ofthe hopper. The slide c is connected `by a pitman e' with a gear-wheele2, which meshes 75 Y with a driving gear-wheel a', formed upon orcarried by the rotating head a; As the head rotates it drives thegear-wheel e2, which in turn causes the slide c to be reeiprocated,moving the pawlfup and down within the 8o hopper. The pawl has a roundedend, so that in going down it will slip over thenuts, which may be heldin the chute instead of jamming in case the chute is full. The office ofthe pawl is `simply to agitato the nuts in the hopper above it, so thatthey will be entered into the chute.

When the machine is set in operation and a handful of nuts is throwninto the hopper, these are fed down into the chute and rest in 9o acolumn edge to edge upon the yielding stop 'd at the bottom. The frontof the chute'has a vertical slot through which the stein of a screw (asa binding-,screw mounted on the base of an electrical instrument) heldin the hand of the operator may be inserted to engage the eye of the nutnearest to the wrench. The operator presents the point of the screw tothe eye of the nut and forces it past the yielding stop and on into thesocket of the roc rotating wrench-head b', whereby the nut is rapidlyand automatically screwed on. The

operator may, if desired, Wait until the nut has been screwed on as faras it will go before pulling it out from the socket, in which case theWrench Will slide frictionally Within the chuck when the nut can bescrewed on no farther.

I claim- .i

1. The combination with a rotatable chuck and means for driving thesame, of a Wrench held frictionally by said chuck and a guide- Way fornuts leading to the mouth of said wrench, an opening being provided inthe front of said guidevvay through which the stem of a screw may beinserted to engage the eye of a nut-and move the same into the mouth ofthe Wrench.

2. The combination with a driven rotating Wrench, of a nut-guidewayleading to the mouth of said wrench, adapted to hold nuts in a columnedge to edge, a hopper at the upper end of the chute for receiving thenuts,

Wrench slipping relatively to the chuck When the nut can be screwed onno farther.

In Witness whereof l hereunto subscribe my name this 17th day of March,A. D. 1902.

SAMUEL F. SHORT.

Witnesses:

F. A. HoPToN, C. CAMPBELL.

